Improvement in paper-damping machines



W. SCOTT. Paper-Damping Ma0hi11es.,

No. 196,484. Patented Oct. 23,1877.

(/fz a es i UNITED STATES PATENT WALTER. SCOTT, or oHIcAeo, ILLTNOIS,'AssIeNoR or oNnHALrHI's RIG-HT To WILLIAM PENN NIXON, or SAME PLACE.

IMPROVEMENT IN PAPER-DAMPIN'G MACHINES.

Specification forming part of Letters Patent No. 196,18 dated October23, 1877 application filed May 31,1877. v

transverse section of the same, taken on the line a at, Fig.1; Fig. 3, alateral section of the adjusting device, on an enlarged scale, taken onthe line 3 y, Fig. 1 and Fig.4, a view of one of the clampingplates onan enlarged scale.

My invention relates to the mechanism for holding the rolleron which thepaper is wound afte'r dampening down to the friction-cylinder, bycontact with which it is rotated; and its object is toprovide for thegraduation of the force by which the roller is thus held, so that it maybe increased and decreased at pleasure, and afiord a steady pressure.

I The invention consists in a swinging frame carrying thereceiving-roller, and provided with arms, passing betweenbearing=plates, which are adjustable, so as to regulate the friction bywhich the frame is held.

It also consists in the special devices for adjusting the bearing-platesand it further consists in various combinations of devices, all of whichwill be hereinafter more fully set forth.

In the drawings, A represents the support ing-frame, upon which ismounted a cylinder, B. This cylinder is of ordinary construction, andthe web of paper passes over it, as usual in dampening-machines, beingdrawn from a roll supported upon another part of the frame. Adriving-pulley, b, is mounted upon the same shaft with the cylinder B,by means of which the latter is rotated. The machine is also providedwith the usual sprinkling apparatus, arranged in any suitable manner.The receiving-roller O is mounted in a swinging frame, D, consisting ofa rock-shaft, d,- journaled in the frame A, and provided with fixedprojecting bars (1, which are of suflicient length to reachthe-cylinderB when the frame is turned down in that direction. The outerends of these bars are forked, so as to provide open bearings c for thejournals of the roller 0, which is mounted upon the bars d, as shown inFigs. 1 and 2 of the drawings. Curved arms 'E are attached to the barsd, and project downward therefrom, to pass; through guide loops or boxesF, attached to the side pieces a of the supporting-frame A. In the boxesF are arranged bearing-plates f, which are notched at the sides, asshown in Fig. 4. of the drawings, the notches being fitted to receivethe opposite sidesof the boxes when they are placed in position, so thatthe plates are held in the boxes loosely, and can be adjusted back andforth at will. These bearing-plates may be two in number, arranged oneon each side-of the curved arms E; or, if desired, only one may beplaced in each box, on the outside of the arms, the inner side of theboxes acting as the bearing upon the other side of the arms.

On each box is mounted a tubular journal,- G, the inner end of which hasa screw-thread cut uponit, by means of which-it is held in place in'abearing in the outer side of the boxes, which is also threaded, as shownin Fig. 3 of the drawings. On the outer end of each of the journals G agear-wheel, g, is fixed. A screwthread is also out upon the inside ofthe tubular journals G for a short distance at their inner ends, and arod or pin, H, is inserted in the journals G, the inner end of which isthreaded, so as to fit the inside screw-thread in the journal. The outerend of the rod H has a small wheel, h, by means of which it is turnedback and forth.

These devices being constructed and arranged as describedand shown inFig. 3- of the drawings, it is evident that by turning up the rod H theinner end will press against the inside bearing-plate f and adjust itinwardly, so that when the curved arms E are passed down into theguiding-boxes they may be held by any force desired by adjusting theoutside bearing-plate, as described.

A shaft, I, is mounted in the supports of the boxes F, or in any othersuitable bearings on the main frame, and is provided with apinion, i, ateach end, which engages with one of the gear-wheels g on the tubularshafts G. The

shaft I also has a small wheel, 1', at one end, by means of which it isrevolved, and it is evident, therefore, that by turning the shaft thegear-wheels g may both be rotated in the same direction, and, therefore,the shafts adjusted simultaneously inward or outward in relation to theboxes, the threads on said shafts being right and left hand.

The setting pins or screws H being turned up so as to project slightlyfrom the inner ends of the shafts G, and adjusted so as to bring thebearing-plates against the curved arms B, it is evident that the forcewith which said plates are made to bear upon the arms may be readilyadjusted by turning the shaft I slightly in one direction or the other.

Now, the roller 0 being held down against the cylinder B, and rotated byits contact therewith, it is evident that the closeness with which thepaper is wound thereon depends upon the force with which it is heldagainst the cylinder, and as this may be graduated by the devicesdescribed above, it is plain that the paper may be wound upon thereceiving-roller with any degree of tightness required.

The frictional force with which the roller is held down to the cylinderis steady when once adjusted, and consequently the roller is held to thecylinder in a uniform and steady position, yielding as required byforcing the curved arms to slide upward in their boxes.

At one end of the rockshaft d is a lever, J, attached thereto, by meansof which the frame 1) may be vibrated. This movement of the frame isnecessary for the removal of the receiving-roller when full, and itsreplacement by another. The filled roller is removed by simply throwingthe frame back into the position shown by dotted lines in Fig. 2 of thedrawings, when it will fall out of its place upon the bars d on accountof the bearings c being open. A new roller is then put in place and theframe turned back into position, if it is desired to continue theoperation.

By my invention I am' enabled to secure a much more steady and uniformpressure of the receiving-roll upon the driving-cylinder than with theweights which have heretofore been used for this purpose, and at thesame time I am enabled to graduate the yielding force of the roller withgreat nicety.

The adjusting devices may be arranged on each side of the machine, asshown and described, or, if desired, on one side only; but

the former arrangement is the more desirable, as it will secure a moreuniform pressure throughout the length of the roll than would be thecase if only one set were used at one end of the roller.

It is evident that the set-screws H may be used without the otheradjusting devices, the bearing-plates on each side being adjustedseparately and, also, that they may be dispensed with and the journalsGr made solid, in which case the plates could only be adjustedsimultaneously. The mechanism above .described, and shown in thedrawings, is preferable, however, for with it the plates on each side ofthe machine may be adjusted both sep- 2. The swinging roll-supportingfi'ame D, in

combination with the arms E, movable bearing-plates f, and a device,substantially as described for adjusting said plates, substantially asand for the purpose set forth.

. t 3. The guide loopsorboxes F,in combination l l l l l with thebearing-platesfi notched as described,

substantially as and for the purpose specified.

4. The adjusting bearing-plates f,in combination with the set-screws H,and the threaded tubular journals G, carrying wheels g, substantially asand for the purpose set forth.

5. The shaft I, provided with pinions i, in combination with thegear-wheels g, mounted on threaded tubular journals G, and theadjustable bearing-plates, substantially as described.

6. The swinging roller-frame D, in combination with the curved arms E,guide-boxes F, provided with movable bearing-plates f, setscrews H,threaded tubular journals G, shaft I, and pinions g i, substantially asdescribed.

WALT R scorn Witnesses L. A. BUNTING, W. O. OoRLIEs.

